FM 11-22 Signal Operations In The Corps And Army 1945-01-15
"The purpose of this manual is to outline briefly the organization of the corps and army, the organization and operation of assigned signal corps units, and the application of signal corps activities to tactical operations."
Digitized by the Combined Arms Research Library Digital Library, US Army Combined Arms Center. http://cgsc.cdmhost.com/cdm/
"This manual, together with FM 11-21 (when published), supersedes FM 11-20, Organizations and Operations in the Corps, Army, Theater of Operations, and GHQ, 11 November 1940, including C1, 12 June 1941."